Answer
$$1.13 \times 10^{-1}.
$$
Work Step by Step
We simplify by multiplying like terms as follows:
$$
(6.2\times 10^{-5})(5.2\times 10^{-6})(3.5\times 10^{8})\\
=112.84 \times 10^{-3}=1.13 \times 10^{-1}.
$$
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